Pump



Hat 9 1923.

w. M. FLEMING PUMP Filed Aug. 10. 1921 gflf INVENTOR BY His ATTORNEYS 1D1: 10') rate. tea Lint.

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VJILLS Iv'I. FLEMING, OF HOLYOKE, TMASSACHUSET'JS, ASSIGNOR TONQRTHING'TON PUMP AND HTAGHINIERY CORPORATION, OF KEV] YORK, N. '1 ACORPORATION OF VIRGINIA.

PUIVIP.

Application filed August 10, 1521.

To all whom it may concern.

v3e it known that 1. ime M. FLEMING, a

citizen of the United States, residing at lzlolyolre, county ofl'lampden, and State of Massachusetts, have invented certain new anduseful Improvements in Pumps, fully described and represented in thefollowing specification and the accompanying drawings, :l'orming apartof the same.

adapted for pumps of that class in which delivery is effected by pumpplunger dis placement of liquid in a valved plunger chamber, andto soform and locate such priming means that it will co-operate with thesuction air chamber to automatically supply at all times, except duringthe priming operation, in sufiicient quantity to insure satisfactoryoperation of the pump.

F or a full understanding of the invention, a detailed description of apreferred cmborliment thereof will now be given in connection. with theaccompanying drawings. and the novel features thereof then bespecifically pointed out in the claims.

In the drawings Fi snire 1 is a partial vertical. central sectionlongitudinally of the pump plunger, and

Figure 2 is a view similar to Fig. 1, of the priming means, but showingthe parts enlarged for clarity.

Referrin now to the drawin s and )arh a a ticularly to Fig. 1, the pumpconstruction consists of the usual cylinder casting A, pump plunger B,suction and discharge valves, C, D, respectively, discharge air chamberlland pulsation chamber F. The crosshead G works in a guide 10 and isdriven by any well known means, such, for example, as an eccentricconnection to the main shalt (not shown Referring now to Fig. 2, themeans for priming the pump and also for supplying air in sufficientquantity at all times during the operation or" the pump, except duringthe priming operation, consist of a receptacle or basin 1 locatedadjacent to the pump cylinder, such basin having an opening 2 in thebottom thereof normally closed by a plug 3, which may be a screw plug,as shown. The opening; 2, when the plug 3 is removed,

Serial No. 491,108.

is in communication with an extension 4 of the plunger chamber l7, suchchamber preferably being formed as shown, that is, with a fiat top forelimination of air pockets, and an inclined bottom to facilitate flow ofpriming liquid. The suction air chamber H is in communication with theatmosphere through passage 5 and air sniitting nozzle 6, connecting thepriming basin 1 and passage 5, such nozzle being adapted toautomatically admit air to the pump for the proper supply of the suctionand discharge air chambers at all times except during the primingoperation, as hereinattcr explained. The end of the passage 5 isconveniently closed by a screw" plug 7, and is also provided with anemergency cock 8. The snifting nozzle 6 is preferably formed of bronzeand, as it is im practicable to drill a. hole sufliciently small thereinfor the present purpose, such nozzle is preferably provided with a tipformed of aluminum or some other non-corrosive metal, indicated at 9,which is set into the nozzle 6 in any suitable manner. The nozzle tip 9is conveniently formed by first drilling small hole, one-sixteenth of anincn in diameter, therethrough and then closing the end in over a pieceof steel wire of the proper diameter, the latter being subsequentlywithdrawn. A. very small hole of the proper size can thus be properlyand rapidly formed. and is particularly well adapted for the presentuse, in that the nozzle tip or openingbeing at the extreme end, there islittle chance for paint or grease to pack around the'opening, as wouldbe the case it such opening were in a recess. This feature r nders thenozzle tip practically seltcleaning.

The operation otth primingmeans above described is as "follows: Plug 3in priming basin 1 having been removed and the cock 8 being closed,priming liquid is supplied to such basin until the pulsation chamber Fisfilled andthe liquid in the basin covers the nozzle tip 9, thuspreventing access of air to the suction. air chamber through nozzle 6 vand passage 5. The plug 3 is then replaced the suction air chamber andthe pump then take up automatically its air charging function,'untilstopped and priming is again necessary, when the operation abovedescribed will be repeated;

"tions and also in other relations with equal advantage. 7

hat is claimed is:

1. Priming means for pumps and the like, comprising a liquid receivingreceptacle having an opening for admitting liquid. to the pump cylinder,means for closing said open mg, and an air supplying connection withsaid receptacle adapted to be sealed by the liquid therein during thepriming operation.

, 2. Priming means for pumps and the like, comprising a liquid receivingreceptacle having an opening for admitting liquid to the .pump'cylinder, means for closing said openv ing, and a suction airchamber;connection with said receptacle adapted to be sealed by theliquid'therein duringth -priming opera tion.

3. Priming means for pumps and the like, comprising a liquid receivingreceptacle having an opening for admitting liquid to the pump cylinder,means for closing said opening, a nd'an air supplying connection withsaid receptacle adapted to automatically admit air to the apparatus oncompletion of the priming operation.

4. Priming means for pumps and the like, comprising a liquid receivingreceptacle hav- ,ing an opening for admitting liquid to thepumpcylinder, means for closing said open-- ng, and an air shiftingnozzle connected 1withsaid receptacle and ,adapted to automaticallyadmit air to the apparatus when the liquidflevel in said receptacleexposes the-nozzle orifice to the atmosphere.

5. Priming means for pumps and the like, comprising a liquid receivingreceptacle having an opening for admitting liquid to the 7 my hand.

pump cylinder, means for closing said'opeir ing, and an air sni'ttingnozzle connected with said receptacle and adapted to automatically admitair to the suction air chamber of the pump when the liquid level in saidreceptacle exposes the nozzle orifice to the atmosphere. 7

6. Priming means for pumps and the like, comprising a priming basincommunicating with the pump cylinder, means for closing communicationbetween said basin and cylinder, and an air snitting nozzle connectedwith said basin and adapted to admit, air to the suction air chamberduring normal operation and to automaticallyshut off said air supplyduring priming. a

7. Priming means for pumps and the like, comprising a priming basinhaving an open ing for admitting liquid to the pump cylinder, aremovable plug for closing said opening, and an air shifting nozzleconnected. with said basin, said .snifting nozzle be ing adapted toprevent'entrance of air to the suction air chamber of the purnp'duringpriming but toautomatically admit air thereto when suflicient liquid insaid basin has been withdrawn through said nozzle to expose the orificethereof to the atmosphere.

8. Priming means for pumps and the like, comprising priming basin 1communicating with the pump cylinder, and nozzle 6 for supplying airto-suction air chamber H. the

air inlet of nozzle 6 being within and above the bottom of the basin. 7

9. A priming means for pumps and the like, comprising priming basin 1communieating with pulsation chamber'F, plug 3, and snifting nozzle 6having tip 9" for conveying air to suction airchamber H after thepriming operation, the air inlet of noz zle 6 being within and above thebottom of the basin. l

10. The combination with priming means for pumps and the like, ofair'snifting nozale 6 having removable tip 9, the orifice in said tipbeing closed in' at the end of the tip to reduce the'diameter of the tipbore. In testimony whereof, I have hereunto set WILLS M. FLEMING.-

